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Reports redundant escapes in the replacement string of regex methods.
It is allowed to escape any character in a regex replacement string,
but only for the <code>$</code> and <code>\</code> characters is escaping necessary.
<p><b>Example:</b></p>
<pre><code>
  string.replaceAll("a", "\\b");
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  string.replaceAll("a", "b");
</code></pre>
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<p><small>New in 2022.3</small>
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